Microfluidic device and method for fluid clotting time...

G - Physics – 01 – N

Patent

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G01N 33/49 (2006.01) B01L 3/00 (2006.01)

Patent

CA 2700073

A microf luidic passive device and a method for determining clotting time are described, of a fluid medium such as blood, of low production cost which can therefore be disposable. When optimised to determine blood clotting time, it requires a minimal whole blood sample (<5 µL) and it is particularly suited to INR or PT determination, which can be used autonomously by patient without venipuncture. Monitoring, and processing means to interpret the results are comprised in an external coagulometer device. A production method for the manufacture of the microfluidic device is also provided.

L'invention concerne un dispositif microfluidique passif et un procédé de détermination du temps de coagulation d'un milieu fluide comme le sang, dont le coût de production est faible, et qui peut par conséquent être jetable. Lorsqu'il a été optimisé pour déterminer le temps de coagulation du sang, il ne nécessite qu'un échantillon minimal de sang entier (<5 µl) et convient particulièrement bien à la détermination du RIN et du TP, et peut se prêter à une utilisation autonome par le patient sans ponction veineuse. Des moyens de suivi et de traitement permettant d'interpréter les résultats sont intégrés dans un dispositif de coagulomètre externe. L'invention concerne également un procédé de production pour la fabrication du dispositif microfluidique.

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